Date:         Mon, 9 Dec 2002 15:54:17 -0500
Reply-To:     Metadata Object Description Schema List <[log in to unmask]>
Sender:       Metadata Object Description Schema List <[log in to unmask]>
From:         Jerome McDonough <[log in to unmask]>
Subject:      Re: Thoughts on digital contents : MPEG-7
Comments: To: Metadata Object Description Schema List <[log in to unmask]>
In-Reply-To:  <[log in to unmask]>
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At 07:43 PM 12/9/2002 +0100, you wrote:
>Does the "Digital Audio-Visual Preservation Prototyping Project" have worked
>on MPEG-7 metadatas ?
>
>MPEG-7 claim to be compatible with Dublin Core, SMPTE Metadata Dictionary
>and others.
>see : http://mpeg.telecomitalialab.com/standards/mpeg-7/mpeg-7.htm

I don't know if anyone at LC has been working within the MPEG-7 community.
While MPEG-7 is a remarkable achievement, a great deal of its usefulness
derives from its flexibility and extensibility.  To be honest, from my
perspective,
I'd like a little less flexibility and extensibility when defining
technical metadata
for a digital library resource.  And the fact that MPEG-7 defines extensions to
the XML Schema language presents an additional difficulty for using it within
METS.  So, I'd rather see a video-specific technical metadata extension schema
for METS developed, basically something like LC's existing schema, but based
on existing standards work, like SMPTE's.


>--
>MPEG-7 addresses many different applications in many different environments,
>which means that it needs to provide a flexible and extensible framework for
>describing audiovisual data. Therefore, MPEG-7 does not define a monolithic
>system for content description but rather a set of methods and tools for the
>different viewpoints of the description of audiovisual content. Having this
>in mind, MPEG-7 is designed to take into account all the viewpoints under
>consideration by other leading standards such as, among others, TV Anytime,
>Dublin Core, SMPTE Metadata Dictionary, and EBU P/Meta. These
>standardisation activities are focused to more specific applications or
>application domains, whilst MPEG-7 has been developed as generic as
>possible. MPEG-7 uses also XML as the language of choice for the textual
>representation of content description, as XML Schema has been the base for
>the DDL (Description Definition Language) that is used for the syntactic
>definition of MPEG-7 Description Tools and for allowing extensibility of
>Description Tools (either new MPEG-7 ones or application specific).
>Considering the popularity of XML, usage of it will facilitate
>interoperability with other metadata standards in the future.
>--
>
>Yves

Jerome McDonough
Digital Library Development Team Leader
Elmer Bobst Library, New York University
70 Washington Square South, 8th Floor
New York, NY 10012
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(212) 998-2425